Re: [Qemu-devel] [PATCH v4 3/8] block: add drive-backup QMP command

[Eric Blake <eblake@redhat.com>]

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On 05/16/2013 02:36 AM, Stefan Hajnoczi wrote:
> @drive-backup
> 
> Start a point-in-time copy of a block device to a new destination.  The
> status of ongoing drive-backup operations can be checked with
> query-block-jobs where the BlockJobInfo.type field has the value 'backup'.
> The operation can be stopped before it has completed using the
> block-job-cancel command.
> 
> @device: the name of the device whose writes should be mirrored.
> 
> @target: the target of the new image. If the file exists, or if it
>          is a device, the existing file/device will be used as the new
>          destination.  If it does not exist, a new file will be created.
> 
> @format: #optional the format of the new destination, default is to
>          probe if @mode is 'existing', else the format of the source
> 
> @mode: #optional whether and how QEMU should create a new image, default is
>        'absolute-paths'.
> 
> @speed: #optional the maximum speed, in bytes per second
> 
> Returns: nothing on success
>          If @device is not a valid block device, DeviceNotFound
> 
> Since 1.6
> 
> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
> ---
>  blockdev.c       | 92 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  qapi-schema.json | 32 ++++++++++++++++++++
>  qmp-commands.hx  | 37 +++++++++++++++++++++++
>  3 files changed, 161 insertions(+)

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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